RE Audio’s SEX Line of subwoofers redefines high performance and value. These subwoofers are placed in the middle of RE Audio’s full line-up, and can handle high power output around 600 watts RMS! These SEX Subwoofers are the perfect addition to any trunk!

These impressive subwoofers are built into a cast aluminum basket, and their triple stacked magnet drivers work off of a 3” 4-layer aluminum voice coil. This allows for quick bass response, and clearly outputs for deep bass in the lower frequency range. With an FEA optimized motor structure, the SEX subwoofer lineup maintains tight bass response and allows the subwoofer full control over all types of music.

Each one of these RE Audio SEX Subwoofer can handle 600 watts RMS of continuous power, no matter the size! These competitively priced subwoofers are an excellent complement to any audio system, and will provide you with that clean, hard hitting bass you’re looking for.

Product History:

Subwoofer Specifications

Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.

SEX (RE Audio)

Subwoofer Size

Refers to the diameter of the subwoofer, measured in inches.

12"

RMS Power Handling

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.

600 watts

Voice Coil(s)

Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.

Dual

Impedance (Per Voice Coil)

The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.

4 ohms

Voice Coil Diameter

Diameter of voice coil, usually measured in inches.

3"

Sensitivity

An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".

86.1 dB

Xmax (millimeters)

Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.

18 mm

Subwoofer Design

This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle

Main Cone Color

This is the color of the speaker's or subwoofer's cone.

Black

Woofer Composition

Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.

Dual Composite 2-Piece Cone

Woofer Surround

A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.

Rubatek Foam

Magnet Structure

Defines the overall structure of the subwoofers magnet.

Triple Stacked

Subwoofer Grille

Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.

No

Re-Cone Kit Available

Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.

No

Recommended Enclosure Specifications

Recommended Enclosure Type

This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / VentedSealed

Minimum Sealed Box Volume

This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

0.75 cubic feet

Maximum Sealed Box Volume

This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

1.0 cubic feet

Minimum Ported Box Volume

This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

1.5 cubic feet

Maximum Ported Box Volume

This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.

2.0 cubic feet

Top-Mount Depth

The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.

7"

Cutout Diameter

The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.

11-1/4"

Shallow Mount Installation

This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Electromechanical Parameters

Free-Air Resonance (Fs)

The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.

25.1 Hz

Equivalent Compliance (Vas)

This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.

72.9 liters

Total Speaker Q Value (Qts)

This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses.
Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.

0.44

Electrical Q Value (Qes)

The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.

0.49

Electrical Resistance of Voice Coil (Re)

Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.

2.8 ohms

Mechanical Q Value (Qms)

This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.

4.5

Efficiency Bandwidth Product (EBP)

This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

51.22

Specials with this Item

Promotions

Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

More reviews

The RE Audio SEX12D4 is one of the best sounding subwoofers I have ever heard. Seriously, this sub is incredible. At first I was a little skeptical about it. I had heard really good reviews about the sub, but I couldn’t get over the low price. I guess this subwoofer is in the same class as the Alpine Type-R, Kicker CVX, Rockford Fosgate P3, Pioneer Champion Pro, MTX Thunder 8500, etc… BUT I think it sound SO much better! The RE Audio SEX woofer plays LOUD. Right now I have it in a vented enclosure tuned at approximately 32 Hz and it is hands down the best sounding subwoofer I have had in my car. No matter what type of music I am listening to, it sounds great. When I’m testing my system with some Eagles – Hotel California (live version of course), the bass is the perfect amount to compliment the speakers. Not too overbearing, but just enough punch. When I put on some Hip Hop, the bass notes hit deep and I can feel the bass. This sub will sound great with all genres of music.

It has some serious excursion too. I put on the Bass Mekanik – Sonic Overload CD and really tested the bass. I was really impressed. The sub was flying all over the place! Sounded much better than the several subwoofers that have been in the car before it. Don’t want to say specifically which subs it sounded better than (hint: read above), but this is definitely sounded better, and not just for SPL. I have found that the RE Audio SEX 12” sub is great for SQ as well. Currently, I have it hooked up to a Kicker 750.1 amp that stated 925 watts RMS on the birth sheet. So even if the amp is just giving the sub 750 watts RMS, this sub is still running smooth. Even though they state 600 RMS, just bring the gains down and you can hook it up to amp that put out a lot more power. Probably the safest bet to hook it up to a perfectly matched 600-watt car amplifier.

Overall, I am 100% impressed and converted to RE Audio subs. For the price that Sonic Electronix has, you can’t go wrong. This is bass that I would expect to spend $400-500. Plus, I love the look of the cone. Just a simple black inverted dome with the RE logo. Simple and cool.

Was this review helpful to you?

This sub is great, I own two of them in a ported box 1.75cu for each sub. I have them running on a Hifonics Brutus 1200.1 @ 1 ohm. These sound great in my suburban they hit the lows very well and get loud. Not to mention the sound quality is amazing. They are very power hungry I wish I would have gone with the 1700.1 amp. Ive pounded these subs very hard and clipped them for long periods of time to see what they can handle and they still hit hard. Amazing sub amazing service from Sonic Electronix.

30 of 48 found this helpful

Was this review helpful to you?

I have 2 of these installed in my 03 Acura Cl. I have them hooked up to a Hifonics Amp @ 1ohm 2000 rms. Let me tell you it feels like my eye lids are flapping when i crank it. Highly recommended! All my friends have a puzzled look when i tell them RE Audio aka True Sleepers.

33 of 56 found this helpful

Was this review helpful to you?

Simple, these subs bump, and at a great price! I have a 1961 beetle with 2 of these subs in them and it's insane how loud and accurate these subs are, they sound great listening to rock or metal and especially dubstep. I highly recommend these subwoofers to anyone looking to get any, and they take way more watts than the manufacturer says.

13 of 20 found this helpful

Was this review helpful to you?

First of all I've owned two RE XXX 12" dual 2 ohm subs now for 10 years, yes that's 10 years; and I've never had a problem with them. Second I've owned two RE SEX 10" dual 4 ohm subs for 5 years and never had a problem with them. These people are using the wrong box size and the wrong port size when applicable. These subs will handle more than 600 watts rms if they're put in the right box. They are ear splitting loud too. I let my nephew borrow my 10's and all his friends wanted to know what kind they were because you could hear him from 6 blocks away. I installed them in his Dodge Dakota Club Cab in 1.0 cubic foot boxes with 2" ports. I suggest going to reaudio.com and look at their recommendations for box and port sizes. They slammed until he had a wreck and his truck burned up, thank GOD he was ok. For this Christmas I'm installing 2 of these in a 2.50 cubic foot box with 3" ports at 34 Hz. The amp I'm going to use is a Hifonics HFi1500D. Note that the amp is 300 watts too high. However if you calculate a class "d" amp you only get 90% wattage output. One more thing I HAVE BEEN A PROFESSIONAL INSTALLER FOR 20 YEARS. Thank you.

Was this review helpful to you?

I bought 2 of these and bought a dual enclosed did not fit ended finding are very well built ported box 1.5 thick MDF .They are being powered by a Rockfort Fosgate 1500 -1 bd amp that the birth certificate says 1946 watts I like that they give 40 %more power free.. to get back to sub woofers they are great I based my purchase on the testimony of these prodcuts the rest the system everything purchsed at sonic my head unit is the Pioneeer DEH -PRS wow incredible front door RE XXX compo and in the rear helix comps running om Rock fort 800 *4 that puts out 97 watts .ALL THESE INSTAED IN 20008 TOYOTA Siena it rocks in very big way

24 of 43 found this helpful

Was this review helpful to you?

I'm no audio pro, but I am an enthusiast. Purchasing this sub was definitely no mistake. Thanks to Sonic for the AWESOME prices, truly can't beat it. I got everything for $350. And I blow everyone else in the area out of the water! I have this in the back of my '03 Tiburon facing the front in a Belva 1.8 cu. ft. ported box hooked to a Boss AR3000D (wasn't gonna spend a whole lot of money on an amp) with a full fledged 4 ga wiring kit wired at 4 ohms and this thing HITS. My mirrors go nuts, the lows this thing produces is unreal and you can hear it from at least a 1/4 mile away, and the thing is... it's not even turned half way up! The excursion is great. I love everything about this sub. I listen to country, old rock and rap. I listen to literally everything and it sounds great with it all. If you're thinking about buying this sub... buy it. You won't regret it. The people who think they have something with their 2 Kicker Comp 12s or their Type R.... they don't stand a chance against this. Everyone is amazed when i tell them I only have one sub for it to be so loud and so clear. I'm gonna keep pushing this one a little more here and there. I love it. If you love bass and want a lot and clear sounding, and like the lows and want to feel your hair move and feel it in your chest... and on a budget, buy this sub.

20 of 35 found this helpful

Was this review helpful to you?

This is a sub with a conbination of kicker cvx and pioneer 3002 d2 and jl audio...... Nice clear subs but can gyet loud when the volume is turned up...the tinsel leads can't take the beating sumtimes...but the sub can....this is 1 sub I can say I would upgrade in the same line

12 of 19 found this helpful

Was this review helpful to you?

When I originally purchased this sub, I was skeptical because I thought RE Audio wasn't as good as it used to be. Boy was i wrong, this sub can hit any note and sound good doing it. Just try not to go too much over the rms rating, around 750 watts is perfect. I fed mine 900 watts from a Hifonics Brz 1200.1 for around 6 months and it did fine. I upgraded to a Crescendo BC2000d and it couldn't take the 1,100 watts of power at 2 ohms and it finally blew. For what it's made for, it's an excellent woofer at a great price, sonic FTW.

15 of 26 found this helpful

Was this review helpful to you?

But the only issue I am coming across is that when I installed the sub into my ported box. There is a weird like metal hitting rattle noise coming from inside of the box. Its very annoying. And i have the gain at 500watts.

13 of 22 found this helpful

Was this review helpful to you?

This is the best sub that I have ever owned! I love it! It doesn't hit like a SPL sub but I'm fine with that because this baby has tone, and lots of it!! I am planning on buying another one because I want the best of both worlds, Tone and Destruction of my car!! I recommend this sub to anyone that loves tone! I will never buy JL audio subs because these are way better!

23 of 42 found this helpful

Was this review helpful to you?

I bought two of these subs mostly by review only. Worth every penny. They hit like higher class subs. I have them hooked up to a Belva 2000 watt max Mono Block amp, perfect match. I would suggest these to anyone. Infact im trying to get my friend to get a set of RE Audio SEX 10's... Buy these they are built for brutality.....

13 of 23 found this helpful

Was this review helpful to you?

own 2 of these running on a hifonics brutus 1200 rms giving them both 600 rms. the tinsle leads break often. ive repaired them close to 15 times in a matter of 8 months not so satisfied but i do love these subs, i just wish they would last and not have to re solder the leads every month

Was this review helpful to you?

Running two off a Soundstream DTR1700.1d @ 1 ohm in 5.5 cubes to 25 hz with two 4" aeros.

Where my backseat should be, I have my box with my subs inverted in a Grand Prix.

Eventually doubling the system and doing a wall.

Anyways, by-far cleanest subs I have EVER heard and loudest for it's power rating. Annihilates the lows causing my cab to feel like a wind tunnel and still being cleaner than anything.
Going from an MTX 9515, I've VERY pleased with how much better these hit the lows and are much more articulate while doing so. I really hated how "punchy" my 9500 was, where these are smooth and instantly transfer note-to-note without any transition noise, but rather just a clean sine wave.

23 of 43 found this helpful

Was this review helpful to you?

As a die hard JL Audio fan for over 14 years I was very skeptical and worried about going outside of my favorite brand when ordering a subwoofer. I have this RE 12" SEX D4 sub in a 1.5cu ft ported box tuned at 33 hz and this thing absolutely slams and plays clean and low. I am very impressed with the quality at this price point. I am running JL HD900/5.

Was this review helpful to you?

I have 2 of these monsters in a custom ported box tuned to 34hz and have a Hifonics brx1600 powering them at 1 ohm. And they SLAM!!! I would definitely recommend these to anyone wanting subs at a good price that will still shake any building you drive by!

20 of 38 found this helpful

Was this review helpful to you?

I have been to car audio competitions and local shops all the time. On the competition note you see all kinds of subwoofers from Pure Sound Quality to Pure SPL. This Sub is More towards Sound Quality. But at the same time can get LOUD but not Extremely Loud. I Have 2 RE Audio SEX12D4s in a Ported Box tuned to 38 Hz. Even Though it is tuned pretty high they still sound Amazing. I Have them in a big 4 door car which is one reason why they aren't the loudest. If they were in a little smaller car they would be a little louder. Im Hitting the Mid 120s on DB Term-Lab. Now that's not much to the 150+ SPL systems in competition but these sound extremely good at that volume which anything above 125 Db is hard to get and still sound as good as these.

Im powering these with a Hifonics Gladiator GLX1400.1D wired to 1 ohm at 1200 watts rms.

ALL IN ALL these are pretty amazing...not the best if you want straight SPL but they are not made for it. Sound Quality Wise. Best I have ever heard outside of Competition. But then most competition cars have more than 2 subwoofers.

Buy these if you like any type of music from Hip-Hop and Rap, to Country and Rock.

Yes they are made in china and a lot of people say they are junk. People say get the ALpine Type Rs over these but people don't realize that ALpine Type Rs are made in china too...Even JL Audio is made in china Except their W7.

With the Box I have them in a ported tuned to 38 Hz. 1.7 Cubic Feet Per Sub..... RE Specs say to tune to 32 Hz with 2.0 Cubic Feet for Optimum.

I am Very Picky when it comes to Subs and how they sound. And These Even Impress Me

If you want Amazing Sound and still have the potential to get Decently Loud then these are for you. and for the price YOU CANT BEAT IT. These are easily worth twice this price.

Was this review helpful to you?

I got this sub about a year ago as a gift, and let me just say... This thing blows my mind every time. I have it hooked up to an MB quart Ref 1.800 that puts out 650 watts rms @ 2ohms. It absolutely slams! The lows are ridiculous!!! Definitely an RE audio fan for good now! :D

Was this review helpful to you?

This sub is the only sub I've ever purchased, but from hearing friends' systems, I can tell you that this is for sure the cleanest sub I've heard, while still hitting nice and hard.

If only the LPF on my HU was better, I wouldn't have to worry about blowing out the two stock mids I have yet to replace!

*only thing to look out for* make sure the box that you buy has a big enough diameter hole to fit this sub. If you call support, they will tell you that they have a certain box that will fit it. For me it was too late, but trust me, it's easier in the long run to just give them a ring.

24 of 46 found this helpful

Was this review helpful to you?

The re audio SE-x 12d4 is the best sub I have ever owned. I'm only running 600 watts to it for now in a custom box and it's already too loud and it's not even broken in yet. When it time I will put my bigger amp on it and can't wait to hear how much louder it can get. I researched and watched videos and I had to get this beast of a sub loved the sr line so I know I was getting a good sub. I recommend this sub highly stop paying high cash for jl you can put more power in these and drop the ohms lower than 2 aswell. And the price can't be beat here at sonic and the service is top knotch here too. So buy one or two and feel the bass.

7 of 13 found this helpful

Was this review helpful to you?

BUY THIS WOOFER! so i found this d4 and was skeptical about buying it but I saw some cool videos on youtube and read some reviews and sprang for it because it was a great deal. It went out of stock as I was buying it so sonic got one from a warehouse back east and shipped it to cali for me for free. I had to make minor cuts to fit it in my existing box (a sonic original box) because i forgot to check mounting specs, but once it was in I knew it would rock. Everyone asks if I have multiple subs or if I have 15's and they are so surprised when i tell them It's only one 12. She hits the lows that know one knows and can really handle what the specs say. Mine is hooked up with 600rms and 12oo peak and the coil does warm up after a lot of slumping, but it takes it all so well. I will always support sonic and RE audio because their support and products have served me amazingly!

6 of 11 found this helpful

Was this review helpful to you?

I went to Daytona Beach in 2009 for our 20th anniversary of going to the show (SBN). We ran into the RE rep, who had a small car laid out nicely. I heard good things about the subs and amps, and gave these a shot. I was running (2) SEX 12s on Rockford power (about 250w RMS to each). These subs sounded okay, but I blew a voice coil twice. RE Audio reconed the first time, and the cone fried again.

I then purchased a higher power RF amp (1358RMS x1 @ 1ohm). Sonic replaced the sub the second time around (thank you), and I just had it installed last night. Boy, with the right power - which I have now, these RE Audio subs hit very hard!! Low, deep bass. I am still breaking them in, so I am taking it easy. But night and day with the power upgrade.

If you buy these subs, feed them CLEAN POWER. Rockford 1200 / 1300 x1 @ 1ohm amps kill it. And they can handle it too, just be careful of your clipping. RE customer service was not that great.

Sonic was VERY GOOD to EXCELLENT at all levels; price, shipping, product selection, customer service, etc. WILL deal with again.

Great buy!

9 of 17 found this helpful

Was this review helpful to you?

This sub has a break in period for sure. I think it took me like 1-2 weeks and that was 3 different amps. The first amplifier I had on them was a Hifonics BRZ1200.2, the right channel got messed up so I sent it back. Next I put a poor quality amplifier on them, it was the Lanzar 1100 watt monoblock, it says it pushed 1100 watts at 2 ohms meaning these subwoofers were being underpowered by 50 watts. They sounded okay for the time being. Then I got my Hifonics 1700.1D and oh my god! These boys shine! So loud they shake my sunroof and they are only in a sealed box at .75 cft per chamber. If you want SPL and SQ this is the subwoofer to go with, 1 is pretty good, but 2 is amazing. A must own.

8 of 15 found this helpful

Was this review helpful to you?

I love this subwoofer! I have 2 in 1.5 cu ft box (.75 cu ft per section). And omg they are so loud, clear too. I have it hooked up with a Hifonics ZRX1200.2 amp so they are getting 600 watts which is their rms. Sometimes I can't even hear the singing in my songs, just straight up bass :) perfect for bass heads.

7 of 13 found this helpful

Was this review helpful to you?

I have a pair of these hooked up to a Hifonics BRZ1200 @ 1 ohm in a box built to spec(4 cubes @33hz) and it sounds amazing! Seriously, for the price, you really can't go wrong with these subs, just make sure to set it all up properly

13 of 25 found this helpful

Was this review helpful to you?

Great sub for the price. It handles lows very well. I feed it a hifonics brz1200.1d at two ohm. I owned a kicker cvr before I got my re. I would recommend the re becuase the power output and coil handling is better then the kicker at a lower hz. The sub will put out 600 rms but I haven't played it long enough to see how the sub deals with the heat.

9 of 17 found this helpful

Was this review helpful to you?

I have two of them with a Hifonics 1200.1 amp and they POUND. They broke my rear view mirror off! Broke the metal bracket. Buy them, you wont be disappointed, they dont just pound they sound amazing too!

Was this review helpful to you?

RE Audio has to be the best sub manufacturer ever. I have a RE Sex12, and it is crazy loud! I put it in a custom box for it. I found it on eBay by Zenclosures and with a JL Audio 500w amp. People can't believe how loud it is! Great buy.

Was this review helpful to you?

My girlfriend bought one of this as her first set, powered by a hifonics brutus 1600.1 ...and of course the gains arent up all the way but the sub is dropped to 1 ohm...and it is a great combo. Def wish i made a purchase like this for my first set up instead of going with audiobahn.

Was this review helpful to you?

This sub is excellent. I have it hooked to an audioque 1200. Its getting around 800 watts and I've had it for months without any problems. sounds great with all music. basically a perfect sub, don't have second thoughts about this sub. well worth the money

9 of 17 found this helpful

Was this review helpful to you?

I own 2 of the 10'' subs and believe me the hit very hard and sound very good, but sadly after just 8 months on a hifonics brutus 800x1 @ 2ohms like one of the other reviewers wrote the wires to the voice coils on both tore off, im gonna miss them but i doubt i will buy them again, excelent price, awesome sound and fits in very small enclosures but the voice coil wires are weak.

16 of 32 found this helpful

Was this review helpful to you?

The subwoofer, in my opinion is one of the best you can get in the price range. It's beefy looking and sounds amazing. At the moment i have it in a pre. fab box, and it still sounds great. once i get a custom box, which are kind of price.. i expect this to sound like heaven.
i would recommend this to anyone who is starting out or looking for an inexpensive subwoofer to have in a small car. I only have one in my suzuki forenza and it shakes that trunk quite well.

26 of 52 found this helpful

Was this review helpful to you?

This sub is amazing i have it in my 2000 jeep cherokee sport running off a kicker dx 1000.1 amp even tho it says 600 rms this thing takes the 1000 rms wired at 2 ohms like a champ and out bangs my buddys mtx terminator 12s type rs and also 2 kicker comp 15s people are amazed when i say its only one 12 deffinetly one of the best hitting and sounding sub for the price re did a great job with this one.

14 of 28 found this helpful

Was this review helpful to you?

Get 2 of these bad boys and you are set for all the bass in the world, If you do get 2, whatever you do, DO NOT put 2 of these subs in a open box and make sure there is a divider between otherwise you will have issues in the future.

Was this review helpful to you?

Hands down, these have to be some of the best subwoofers i have installed and have had the pleasure of owning. When in the proper enclosure they are the most precise subs i have ever heard, the highs are brilliant, the mids are stunningly clear and the lows pound hard. The build quality great and they feel and look well made. I have 2 in a sealed box a tad larger than the optimal size, powered by a Pioneer GM-D9601 and they are amazing. at a normal volume they are precise and accurate, but when you turn them up, all i can say is wow. Simply, they are loud. The pound your chest with keeping sound quality in check. There is no way you can go wrong with any RE product.

Was this review helpful to you?

After hearing great things about RE, i finally purchased 2 12" subs. Man was that a great idea. From bass to rock, no matter what kind of music you're listening to, these subs will not let you down. They can handle easy 800w rms.

7 of 14 found this helpful

Was this review helpful to you?

I own 2 RE Audio SEX12D4's and I absolutely love them. Ive play them at high volumes and they handle great. If you turn up the volume all the way up you will hear clipping, but even then its not bad. They are very durable and can play for long hours in a day. Now that im so used to them Im considering of buying the same subs but in 15".

8 of 16 found this helpful

Was this review helpful to you?

I have 4 of these subs in a cut through hooked up to 2 XTX 3000.1 amps and they straight pound, whenever i do a demo id say a good 95% of the ppl have to jump out within the first 10 seconds but not only do they hammer but sq wise they are very clean. I highly recommend these subs especially for the price that Sonic is selling them at.

Was this review helpful to you?

good sub absolutely murders the lows. it is not an spl sub but it will get loud the only downside to them is that they are very power hungry. if you are running two i would recommend 17 2000W rms they will take it no problem! Buy from Sonic Electronix, you can trust them. I love them and will buy again and again

11 of 22 found this helpful

Was this review helpful to you?

I have been into car & home audio for a good 20 years & I have heard soooo many different subs its impossible to remember all of them but RE Audio subs are by far the BEST I have ever heard in my life. I will never buy any other sub besides RE audios from now on. I couldn't be happier. Slams so hard & the lows are amazing. I have three 12s in a custom down firing sealed box @ 1 cube per sub after displacement. Im moving up from 2000 RMS to 2400 RMS though because they can handle the power all day & plus I have them wired at 1.33 ohms each so on 2000 RMS Im really only getting about 1800 @ 14.4 volts which is a perfect matchup on paper (600 rms each sub). BUT, you also have to calculate in 90% efficiency and voltage drops. Make sure to always upgrade your electrical system. With three sex12's & 3000 watts +/- (including 2nd amp for mids/highs) you want to upgrade alt/ 2- AGM/big 3 wiring & all 1/0 ga wires. So, now Im thinking of throwing some extra juice on them & considering putting the 2000 watt amp on a 18" XX sub just for the heck of it. Three 12s & one 18" (RE audio XX or XXX) would satisfy any super bass hungry audiophile out there bc just the 12s slam so hard that my escalade is already rattling apart. Yes I have them in a full size escalade & in a SEALED box (for space saving purposes & SQ) and they beat the living crap out of the SUV. I can only imagine if I would have had a ported box built instead, giving me much more output. By the way, I would recommend HiFonics BRUTUS amps all day. Some of there others aren't as good. Brutus series amps match up perfect with RE's & they do rated power. There CEA compliant. Buy RE's & you will NOT be disappointed. Buy them from sonic too because not only are they the place you can usually always find the best prices on car audio, but the customer service is excellent! I have been buying from sonic for a couple years now & always shop with them first when buying anything car audio. RE AUDIO, HiFonics BRUTUS amps and SONIC ELECTRONICS = FDMFW!!! 5 STARS ON EVERY CATEGORY FOR SONIC & RE SUBS!!! BTW, Thanks sonicelectronics for giving me a chance to own the best subs I ever have bought for the best price I have ever paid.

6 of 13 found this helpful

Was this review helpful to you?

Was running the SSA DCON 12" in a ported enclosure already. Have always wanted to try out the RE subs. For $135 shipped I couldn't pass it up. Couldn't be happier. I am only pushing 500W RMS to it unfortunately. But it sounds amazing. I bet it can take a whole lot more. Definitely took some different tuning compared to the DCON but all in all, this thing is flat amazing. Would love to get it metered one day. I have it in my WRX wagon and of all systems I've had, I'd put this up against my 2 RF subs which hit 134db. BUT the best part is, this thing hits near all ranges of lows. It truly comes alive on hip/hop, dub songs, but does a very solid job on metal as well. Highly recommend to anyone looking for a sub in the less than $200 range.

11 of 23 found this helpful

Was this review helpful to you?

you can get exceptional bass from RE Audios SEX12D4 by going to their website and using the RE Audio box calculator to make a box that is perfect for this sub. I would recommend this sub to any car audio enthusiast.

Was this review helpful to you?

I bought these after seeing how much people on Youtube liked them, and I will agree. They are the loudest and cleanest sounding subs I have ever heard with extreme amounts of excursion. I have two of these wired to 1 ohm in a sealed box powered by an 1800w Kenwood amp and I just simply blows me away. I had two Kicker CVR's previously but these blow them out of the park. I can't wait to get my RE Audio Amp that pushes 2400w on these guys. These are a must buy item!

20 of 41 found this helpful

Was this review helpful to you?

So I have had these subs for about a year know, and I have no complaints. These subs have such great sound all the low bass you need for your rap and all the solid fast punching bass for your rock. I do recommend these to all people looking to have some lound ass subs that have great sound quality at the same time.

8 of 17 found this helpful

Was this review helpful to you?

Bought these subs solely based off their T/S parameters. I'm truly disappointed as I was going for an SQL build. These are definitely SQ subs and nothing more. Running a DTR3400.1d to two subs in 5.2 cubes (before ports and bracing) tuned to ~32 hz with two 4" aeros.

Not going to win any contests but the sound quality is is absolutely amazing. They definitely annihilate the lows and are able to easily and accurately reproduce them. Seeing 1100 before rise, they get a little stinky.

If I were to consider a SQ build in a future, I'll definitely use these, but until then, not for me. Sold them to a buddy for and ordered an 18" SX. Maybe I'll have better luck.

15 of 31 found this helpful

Was this review helpful to you?

Great quality for the price of unit. Easy to install and wire. Very straight forward with sound tuning and limiting on distortion. Quick break-in time and ability to hold its maximum watt input. Minor convex (bubble) on surface of speaker though after 5th month of use.

Was this review helpful to you?

I had two 12 kicker L3's I blew them in 3 months the RE sex 12d4 SUBS HIT HARD I set off everyone's alarm at work I have 2 of them in a ported ground shaker box with a hifonics Brutus 1800 watts at 1ohm I swear you can feel every note in your chest the bass makes the hair on my arms move it swear GET THESE there built for brutality

Was this review helpful to you?

Got this because of the price, but the sub is leaps and bounds above what I expected. If you can buy only one sub... You are nuts if you don't get this one.
The lows are low enough that you feel it in your soul.
Super-satisfied.

Was this review helpful to you?

Note: Sonic Electronics has been excellent in this whole mess, so this review is not about them.

I purchased (2) RE Audio SEX12D4 units. I am powering with a RF 1200.1 (600w each @ 1ohm). The speakers were broken in for about 2 weeks. They sounded great! I am not in comp and I am NOT a ground pounder. Just like my music to be loud at speed.

Within 5 months one unit blew a voice coil. Since unit was under warranty, RE replaced it (or repaired it), no charge.

New one came - had it installed. Let it break in 1.5 - 2 weeks. 3 months later, another V/C blew. Same amp, same box. Nothing else changed. I do not listen to distortion, more for SQ. Not sure what's going on. Sonic REPLACED this unit with a brand new unit. 2 weeks ago, blown V/C!! Now RE wants me to send it back, however, apparently they DO NOT cover blown V/Cs!

I am purchasing (2) Alpine Type R 12 Dual 4s. These are a very good sub for the money, and seem much more reliable.

Was this review helpful to you?

I would recomend this sub to anyone who loves good deep lows. I have one of these subs in a ported box with an mtx 1200 watt amp and it slaps! Its a pretty beefy sub if you ask me, its good looking and a quality woofer. RE makes great subs.

7 of 16 found this helpful

Was this review helpful to you?

These subs sound great but I don't recommend them!! Although the sound is amazing, they don't hold up. I have a hifonics Brutus amp pushing 1000 Watts to both subs in a ported 3.0 cft box. They lasted about 4 months. The weak point on this sub is the voice coils; they are too small and don't hold up to prolonged beatings. I called Sonic Electronix and they told me they couldn't warranty a blown speaker.

Was this review helpful to you?

Dont hesitate about buying this Subwoofer, it performs great. Had a Memphis M-Class proir to buying this sub, it blew in 4months, Memphis is not even close to the RE, it hits so hard and deep too, I am running a RF 500watt amp with this sub and my roof is already flexing, It is a power hungry MONSTER so much so that I already ordered a Hifonics 1500 watt amp rms 1000 @ 2ohm to feed it more. Don't be shy it is a performer!! I still can not give it a 5star for reliability but I have heard RE stands behind there products..

8 of 18 found this helpful

Was this review helpful to you?

Amazing! This sub moves some serious air. I have owned Kicker, MTX, and Alpine’s. RE Audio is far superior. One of these will shake your vehicle apart. Only bad part is the sub basket is too big and you will most likely have to cut the opening of your box so it will fit in.

9 of 20 found this helpful

Was this review helpful to you?

if you have $150 and you are looking for a great sub, you would be CRAZY to get anything but this. great sub! beats up and has amazing sound quality. even on heavy metal, it keeps up with double bass flawlessly, but yet pounds its a** off when told to. I was a firm alpine believer, but now i think i'll stick with RE :)

Was this review helpful to you?

I bought a pair of these, and they met and exceeded all my expectations. CLEAN sound, incredible lows, and excellent excursion for a sub of its size. They put out big big sound and have very good frequency response, but like I said the lows are where these subs really shine. I am running these in a dual chamber sealed enclosure. I know it's been stated, but if you're looking to spend a lot on a sub, it would be crazy not to buy this.

13 of 29 found this helpful

Was this review helpful to you?

I must say I am more than impressed with this subwoofer, it surpassed my expectations and more than meet my desires. For the price I paid, it's too good to have passed up. I haven't owned my subwoofers and from what I've owned and others I've heard this 12" goes lower than I ever thought a 12" speaker could go, and it's plenty loud. I absolutely love it and would certainly recommend anyone buy this product.

6 of 15 found this helpful

Was this review helpful to you?

I bought this sub a few months ago for my 2010 Tahoe. One of the best subs I've owned! Don't let the price fool you, it is a very good sub!! Everyone that's hears my system thinks they are 2 12"s or 1 15"... All I have it has is the 1 RE Audio12" and 1000 RE Audio Amp!!! Looking to buy one more of each for my other vehicles or possibly adding to the Tahoe....

Was this review helpful to you?

So I guess I expected a lot more nor do I understand the hype. I also messed up by doing my build with 12s instead of 18s. With four running on 8 cubes @ 28 hz on 3400 watts walled in a grand prix, I'm barely hitting 138 @ 31 hz on the dash. These get absolutely pooped on by a single 15 (Ive had an MTX 9515 and an AQ HDC3) or even two SA 12s on less power. Definitely a SQ sub. By far the best sound I've ever heard out of any sub, period. Might ditch these for two 18s SXs, tune them higher, and see how that goes.

7 of 17 found this helpful

Was this review helpful to you?

First let me say sonic electronix is a awesome store to buy products from they ship quick and usally have the best price.. I ordered these subs from them and let me tell you I was kinda skeptical when I heard them.. I replaced 2 12 punch p2 that I blew with the MTX thunder 1000xd.. but the reason i was skeptical is because they didn't sound the same I never had such good quality sound that these produce. So it was odd to me.. no distortion clear as whislte hard hitting bass.. I gave them full power with mtx 1000xd and its not enough for these 12's.. I highly recommend theses

Was this review helpful to you?

My buddy has two of these and I have 2 of the REX in my 2003 quad cab truck. I was a little hesitant to buy them because I haven't heard of them in person but wow. they sound great. it blows kicker out of the water. the SE sounds great. I can't wait to try out the start of the competition line. Definitely a must buy. even though I didn't buy from here. I got my 2 12" REX and an 800.2 watt amp by RE at my sub shop for around $500. wasn't too bad at all but you always want more and I have had them for 2 months now and I already want more. lol

19 of 42 found this helpful

Was this review helpful to you?

I bought one of these subs and sounds great. Its in a ported box which i recommend to get. The bass on this thing is amazing. I bought it for a great price, and a great deal. You wont find a sub that sounds that good anywhere else. Shipped in one day.

I've heard nothing but great responses about RE products. 2 of my friends use RE and I can hear them for miles. One friend has 2 10'' and the other has an 18''. Needless to say the 18 is stupid clear and pounds like crazy. The 2 10's are powered by a hifonics brutus, and the 18 is powered by a 5k orion.

Why shop Sonic?

Customer Testimonial

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: RE Audio SEX12D4

RE Audio Overview | CES 2015

Subwoofer Size Buying Guide

Sign-up and save!

Get exclusive discounts, special coupons with savings and the latest product releases.

The Sonic Advantage

What gives Sonic the edge over the competition

Fast & Free Shipping

We offer free shipping on thousands of popular items for our Continental US customers and discounted rates for international customers. With multiple warehouses across the US, most orders are delivered within 3 days!Learn More

Low Price Guarantee

We pride ourselves on offering the best products at the lowest prices. If you find an identical item on another website with a lower price, we will discount our price by 105% of the difference. Some restrictions apply.Learn More

60-Day Money-Back Guarantee

Have a problem with your order and need to return an item? Our generous 60-day return policy allows you to return items for your money back. Should your product have a defect, we will exchange, issue store credit, or repair the product for the entire length of the warranty.Learn More

Free Lifetime Tech Support

Our knowledgeable staff of industry professionals and certified installers is ready to help you pick the right product for your needs. We will help you with the setup, installation, and use of your new products.Learn More

Returns Made Easy

We want your online shopping experience to be easy and convenient. In case you need to return an item, our customer friendly return policy makes it easy.

60-Day Money-Back Guarantee

Have a problem with your order and need to return an item? Our generous 60-day return policy allows you to return items for your money back. Should your product have a defect, we will exchange, issue store credit, or repair the product for the entire length of the warranty. Learn More

Research & How To

Browse our online library of educational resources to learn more about the items you are looking for. Our experts have developed many tools, written many articles, and numerous videos to help you find the best item for your needs.